Hi Mohammad, thanks for bringing this up!
In fact, the most important feature of the KeeBoord plugin has now been introduced to the TiddlyWiki core and will be part of 5.1.18
I've been busy trying to get as many sensible features as possible to the new tiddlywiki release and to fix as many errors as I could in that time,
so I haven't found the time to update the KeeBoord plugin, which is VERY! out of date now.
at the moment I recommend not to use it with 5.1.18. I'll have to remove all features that are now part of tiddlywiki so that they don't interfere.
I'll leave a big note here in the group when the KeeBoord plugin is updated and ready for use with 5.1.18
The tracking of the latest tiddler under focus is something I'm about to improve for the KeeBoord plugin. It will update a separate state tiddler I think, but it will be less complicate than my current tracker
The differences of the keyboard functionality in 5.1.18 and the KeeBoord plugin are under the hood
in 5.1.18 performance is better. the logic how shortcuts get created is the same